Bulimia nervosa with and without obsessive-compulsive syndromes

Area of Science:

• Psychiatry
• Clinical Psychology
• Neuroscience

Background:

• Bulimia nervosa (BN) is an eating disorder characterized by binge eating and compensatory behaviors.
• Obsessive-compulsive phenomena can co-occur with BN, potentially influencing its clinical presentation.
• Understanding the relationship between BN and obsessive-compulsive symptoms (OCS) is crucial for effective treatment.

Purpose of the Study:

• To determine the prevalence of comorbid obsessive-compulsive phenomena in females with BN.
• To investigate if BN patients exhibit a distinct pattern of obsessive-compulsive symptoms.
• To assess the impact of OCS on the clinical features of BN.

Main Methods:

• A sample of 38 DSM-IV diagnosed BN females was assessed.
• Structured Clinical Interview for DSM-III-R (SCID) and Yale-Brown Obsessive-Compulsive Symptom Scale (Y-BOCS) were utilized.
• Phenomenology of BN females with OCS was compared to non-bulimic OCD females and BN females without OCS.

Main Results:

• The prevalence of current obsessive-compulsive disorder (OCD) and subthreshold OCS (sOCS) in BN females was 10.5% and 15.8%, respectively, totaling 26.3% with OCS.
• Obsessive-compulsive symptoms in BN females were indistinguishable from those in a control group of non-bulimic OCD females.
• BN females with OCS reported higher scores on the Eating Disorder Inventory (EDI), particularly on 'drive for thinness' and 'bulimia' subscales.

Conclusions:

• A substantial percentage of females with BN present with comorbid OCS, including subthreshold cases.
• The obsessive-compulsive symptoms observed in BN patients are characteristic of OCD and not unique to the eating disorder.
• The presence of OCS negatively impacts the clinical presentation of bulimia nervosa.